CN111231701A - Liquid electric fuel charging and discharging system and method and energy storage operation method - Google Patents
Liquid electric fuel charging and discharging system and method and energy storage operation method Download PDFInfo
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- CN111231701A CN111231701A CN202010172032.5A CN202010172032A CN111231701A CN 111231701 A CN111231701 A CN 111231701A CN 202010172032 A CN202010172032 A CN 202010172032A CN 111231701 A CN111231701 A CN 111231701A
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- electric fuel
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- 239000000446 fuel Substances 0.000 title claims abstract description 220
- 239000007788 liquid Substances 0.000 title claims abstract description 216
- 238000007599 discharging Methods 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims description 28
- 238000004146 energy storage Methods 0.000 title claims description 14
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 11
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 4
- OGCCXYAKZKSSGZ-UHFFFAOYSA-N [Ni]=O.[Mn].[Li] Chemical compound [Ni]=O.[Mn].[Li] OGCCXYAKZKSSGZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- GLNWILHOFOBOFD-UHFFFAOYSA-N lithium sulfide Chemical compound [Li+].[Li+].[S-2] GLNWILHOFOBOFD-UHFFFAOYSA-N 0.000 claims abstract description 4
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims abstract description 4
- 229920000642 polymer Polymers 0.000 claims abstract description 4
- 150000004053 quinones Chemical class 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 238000005192 partition Methods 0.000 claims description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 16
- 239000001301 oxygen Substances 0.000 claims description 16
- 229910052760 oxygen Inorganic materials 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 13
- 239000002828 fuel tank Substances 0.000 claims description 4
- 241001672018 Cercomela melanura Species 0.000 claims description 3
- 238000003487 electrochemical reaction Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 238000010248 power generation Methods 0.000 description 7
- 229910001456 vanadium ion Inorganic materials 0.000 description 7
- 239000003792 electrolyte Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/70—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by fuel cells
- B60L50/72—Constructional details of fuel cells specially adapted for electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A liquid electric fuel charging and discharging system comprising: the electric pile is provided with a charging interface, the electric pile is charged through the charging interface, and the electric pile is also provided with a discharging interface, and an external circuit or equipment is discharged through the discharging interface; the charging interface and the discharging interface are integrated into one interface to be integrally arranged or are separately and independently arranged; the liquid electric fuel storage tank is used for storing liquid electric fuel, is communicated with the electric pile and is used for conveying the liquid electric fuel to the electric pile or receiving the liquid electric fuel conveyed by the electric pile; the liquid electric fuel formula comprises any one or combination of nano fluid electric fuel containing lithium titanate, lithium sulfide, high molecular polymer or lithium manganese nickel oxide, or inorganic electric fuel containing iron, vanadium or manganese, or organic electric fuel containing quinones, nitroxyl radicals or alloxazines. The charging and discharging system is high in charging and discharging efficiency, environment-friendly, capable of utilizing facilities such as an existing charging station and a charging pile to realize charging, and free of the need of erecting a charging device.
Description
Technical Field
The invention relates to the technical field of flow batteries, in particular to a liquid electric fuel charging and discharging system and method and an energy storage operation method.
Background
The method has the advantages of saving fossil energy, improving the utilization efficiency of the fossil energy, realizing energy conservation and emission reduction and large-scale utilization of renewable energy, and realizing energy diversification, and has become an important strategy for energy safety and economic sustainable development of countries in the world. The power generation of renewable energy sources such as wind energy, solar energy and the like has obvious discontinuous, unstable and uncontrollable unstable characteristics, and the large-scale power generation and grid connection of the renewable energy sources brings serious risks to the safe, reliable and efficient operation of a power grid. The matching high-efficiency energy storage system can adjust the time difference contradiction between power generation and power supply, reduce the influence of natural conditions and ensure the continuity and stability of the power generation and power supply of renewable energy sources. In addition, the energy storage can effectively isolate the production and the use of the electric energy from time and space, and can change the mode of the traditional power system for synchronously producing, conveying and using the electric energy. Therefore, the energy storage device is a key device in the smart grid and the distributed energy supply network, the load balance can be realized through the energy storage system, the power generation efficiency and the power utilization flexibility are improved, and the utilization efficiency of electric energy is improved.
The liquid flow battery is a novel battery technology with low cost and high energy density, which is concerned by various countries and various large automobile manufacturing enterprises, in particular to a liquid flow electric fuel storage technology, which can realize similar oil filling type of charged electric fuel, and the electric storage capacity is 5 times of that of a lithium battery with the same volume, and industries such as automobiles, ships, commercial buildings, civil buildings, transformer substations and the like.
Disclosure of Invention
Objects of the invention
The invention aims to provide a liquid electric fuel charging and discharging system and method, an automobile charging and discharging method and a charging and discharging energy storage operation method by utilizing liquid electric fuel, wherein the liquid electric fuel charging and discharging system and method are high in charging and discharging efficiency and environment-friendly.
(II) technical scheme
To solve the above problems, a first aspect of the present invention provides a liquid electric fuel charge and discharge system, comprising: the electric pile is provided with a charging interface and a discharging interface, and is used for discharging an external circuit or equipment through the discharging interface; the charging interface and the discharging interface are integrated into one interface to be integrally arranged or are separately and independently arranged; the liquid electric fuel storage tank is used for storing liquid electric fuel and is communicated with the electric pile for delivering the liquid electric fuel to the electric pile or receiving the liquid electric fuel delivered by the electric pile; the liquid electric fuel formula comprises any one or combination of nano fluid electric fuel containing lithium titanate, lithium sulfide, high molecular polymer or lithium manganese nickel oxide, or inorganic electric fuel containing iron, vanadium or manganese, or organic electric fuel containing quinones, nitroxyl radicals or alloxazines.
Further, the liquid electric fuel charge-discharge system further includes: the water tank is communicated with the electric pile and is used for conveying water to the electric pile or receiving and storing the water generated by the electric pile; and the gas drainage device is communicated with the galvanic pile and is used for conveying oxygen to the galvanic pile or discharging oxygen generated by the galvanic pile.
Further, the liquid electric fuel storage tank is connected with the electric pile through a supply return pipeline and a valve, and the circulation of the liquid electric fuel depends on a pump or a power diaphragm piston arranged in the liquid electric fuel storage tank to complete the circulation flow of the electric fuel between the storage tank and the charging and discharging electric pile.
Furthermore, a partition board is arranged in the liquid electric fuel storage tank to separate the charged liquid electric fuel from the discharged electric fuel; the partition is arranged in a fixed mode or a movable mode, and the movable mode depends on pressure difference generated by a pump or a power device of the partition to move, so that the volumes of the two sides of the partition are changed.
Further, the movable partition further comprises a sensing device; the sensing device is connected to the liquid electrical fuel tank for sensing the position of the partition within the liquid electrical fuel tank.
Further, the liquid electric fuel charging and discharging system also comprises a liquid level sensor; the liquid level sensor is arranged in the water tank and/or the liquid electric fuel storage tank and used for sensing the liquid level height of the water tank and/or the liquid electric fuel storage tank; the liquid electric fuel storage tank is provided with a partition plate, and the liquid level sensors are respectively arranged on two sides of the partition plate; the level sensor is preferably one or more of a float, float or static pressure level sensor.
Further, the charge and discharge system is applied to an automobile, a ship, a commercial building, a civil building, or a substation.
The invention provides a liquid electric fuel automobile, which comprises the liquid electric fuel charging and discharging system and is used for providing power for the liquid electric fuel automobile.
A third aspect of the present invention provides a liquid electric fuel charging and discharging method using the above liquid electric fuel charging and discharging system, comprising: the method comprises the steps that a galvanic pile is charged through a charging interface, at the moment, a liquid electric fuel storage tank conveys liquid electric fuel to be charged to the galvanic pile, and receives the charged liquid electric fuel conveyed by the galvanic pile; the electric pile discharges to an external circuit or equipment through a discharge interface, and at the moment, the liquid electric fuel storage tank conveys the charged liquid electric fuel to the electric pile and receives the liquid electric fuel to be charged conveyed by the electric pile.
The fourth aspect of the present invention provides a liquid electric fuel vehicle charging and discharging method, using the above liquid electric fuel charging and discharging system, comprising: s1: after the automobile reaches the mileage limit value, discharging the liquid electric fuel to a non-electric or weak-electric state, enabling the automobile to run to a charging station, charging a galvanic pile on the automobile through a charging interface by the charging station, at the moment, delivering water to the galvanic pile by a water tank on the automobile, delivering the liquid electric fuel to be charged to the galvanic pile by a liquid electric fuel storage tank, receiving the charged liquid electric fuel delivered by the galvanic pile, discharging oxygen generated by the galvanic pile by a gas drainage device, and fully charging the liquid electric fuel in the automobile; s2: the electric pile supplies power to an automobile motor through a discharge interface to meet the electric energy required by automobile running, at the moment, oxygen in the air supplied by the positive electrode of the electric pile through the gas drainage device generates an electrochemical reaction, and generated water is discharged to the water tank; and discharging the liquid electric fuel at the cathode of the pile to meet the power supply requirement of the automobile motor until the liquid electric fuel is discharged to a non-electric or weak-electric state, and returning to the step S1.
The fifth aspect of the present invention provides a charge-discharge energy storage operation method using a liquid electric fuel, in which the charge-discharge system using the liquid electric fuel comprises: determining whether the liquid electric fuel charging and discharging station is in a one-way charging operation mode or a two-way charging and discharging operation mode according to the position of the total capacity of the storage tank of the liquid electric fuel charging system in the power grid and a virtual power plant or power grid auxiliary service developed by matching with the power grid; determining the charging and discharging capacity of the liquid electric fuel of the charging station according to the total capacity of the storage tank of the liquid electric fuel charging system, the depth of participation in a virtual power plant of a power grid or auxiliary service of the power grid and the electric load quantity of charging or discharging; and the liquid electric fuel charging and discharging system is used for participating in any one or combination of peak regulation, frequency modulation, black start or interruptible power storage load response of a power grid.
(III) advantageous effects
The technical scheme of the invention has the following beneficial technical effects:
1) the liquid electric fuel charging and discharging system is high in charging and discharging efficiency, environment-friendly, capable of charging the liquid electric fuel by utilizing facilities such as an existing charging station and a charging pile, and free of a charging device.
2) The liquid electric fuel charging and discharging system can be applied to various fields of automobiles, ships, buildings and the like, and fully utilizes the abandoned wind and the abandoned light power to realize the energy storage, peak regulation and frequency modulation of a power grid.
3) The invention can utilize the peak-load frequency modulation of the power generation side or the surplus electric power of the low valley to intensively charge the electric fuel and then distribute the electric fuel to each gas station, thereby realizing the centralized and efficient charging of the liquid electric fuel.
Drawings
Fig. 1 is a schematic structural view of a liquid electric fuel charge and discharge system provided in embodiment 1 of the present application;
FIG. 2 is a schematic structural view of a liquid electric fuel charge and discharge system according to embodiment 2 of the present application during charging;
fig. 3 is a schematic view of the structure of the liquid electric fuel charge and discharge system according to embodiment 3 of the present application at the time of discharge;
FIG. 4 is a flowchart of a method for charging and discharging a liquid electric fuel vehicle according to embodiment 5 of the present application;
fig. 5 is a flowchart of an operation method of charging and discharging energy storage by using a liquid electric fuel according to embodiment 6 of the present application.
Reference numerals:
1: a galvanic pile; 11: a charging interface; 12: a discharge interface; 2: a liquid electrical fuel storage tank; 3: a water tank; 4: a gas drainage device; 5: a liquid level sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
In the drawings a schematic view of a layer structure according to an embodiment of the invention is shown. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity. The shapes of various regions, layers, and relative sizes and positional relationships therebetween shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, as actually required.
It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Fig. 1 is a schematic structural view of a liquid electric fuel charge and discharge system provided in embodiment 1 of the present application.
As shown in fig. 1, the liquid electric fuel charge and discharge system provided in this embodiment includes: the electric pile 1 is provided with a charging interface 11 and used for charging the electric pile 1 through the charging interface 11, and the electric pile 1 is also provided with a discharging interface 12 and used for discharging an external circuit or equipment through the discharging interface 12; the charging interface 11 and the discharging interface 12 are integrated into one interface and are integrally arranged or are separately and independently arranged; the liquid electric fuel storage tank 2 is used for storing liquid electric fuel, and the liquid electric fuel storage tank 2 is communicated with the electric pile 1 and is used for conveying the liquid electric fuel to the electric pile 1 or receiving the liquid electric fuel conveyed by the electric pile 1; the liquid electric fuel formula comprises any one or combination of nano fluid electric fuel containing lithium titanate, lithium sulfide, high molecular polymer or lithium manganese nickel oxide, or inorganic electric fuel containing iron, vanadium or manganese, or organic electric fuel containing quinones, nitroxyl radicals or alloxazines.
The liquid electric fuel charging and discharging system is high in charging and discharging efficiency, environment-friendly, capable of charging the liquid electric fuel by utilizing facilities such as an existing charging station and a charging pile, and free of a charging device.
Preferably, the liquid electric fuel charging and discharging system of the present invention further comprises a water tank 3, which is communicated with the cell stack 1, and is used for delivering water to the cell stack 1 or receiving and storing water generated by the cell stack 1; and the gas drainage device 4 is communicated with the electric pile 1 and is used for conveying oxygen to the electric pile 1 or discharging oxygen generated by the electric pile 1. If the liquid electric fuel used requires water and discharges oxygen during charging and oxygen and discharges water during discharging, for example a vanadium electric fuel, a water tank 3 may be provided to store water produced by the cell stack 1 during discharging or to supply water to the cell stack 1 during charging.
Specifically, the liquid electric fuel storage tank 2 is connected with the electric pile 1 through a supply return pipeline and a valve.
Optionally, the circulation of the liquid electric fuel depends on a pump or a power diaphragm piston arranged in the liquid electric fuel storage tank 2 to complete the circulation flow of the electric fuel between the storage tank and the charge-discharge pile 1.
Optionally, the liquid electric fuel storage tank 2 is preset, so that the shape, size and volume of the liquid electric fuel storage tank 2 and the total amount of the liquid electric fuel in the liquid electric fuel storage tank are known, and a partition plate is arranged in the liquid electric fuel storage tank 2 to separate the charged liquid electric fuel from the electric fuel to be charged; the partition is fixed or movable, and the movable partition moves by means of pressure difference produced by pump or power unit of partition to change the volume of two sides of partition.
Further optionally, the movable partition further comprises a sensing device; the sensing device is connected with the liquid electric fuel storage tank 2 and used for sensing the position of the partition plate in the liquid electric fuel storage tank 2 so as to clearly know the volume of the liquid electric fuel at the two sides of the partition plate and further know the residual electricity, and therefore, the liquid electric fuel can be charged in time.
Further optionally, the liquid electric fuel charging and discharging system further comprises a liquid level sensor 5; the liquid electric fuel storage tank 2 with the partition plate and the liquid level sensor 5 are respectively arranged at two sides of the partition plate. The liquid level sensor 5 is arranged in the liquid electric fuel storage tank 2 and used for sensing the liquid level height of the liquid electric fuel storage tank 2; the liquid level sensor 5 and the sensing device jointly calculate the volumes of the charged liquid electric fuel and the liquid electric fuel to be charged, so that the volumes of the liquid electric fuel at the two sides of the partition plate can be clearly known, and further the residual electricity can be known, so that the liquid electric fuel can be charged in time.
Alternatively, the liquid electric fuel charge and discharge system includes the water tank 3, and the water tank 3 is previously set, so that the shape, size, and volume of the water tank 3 are known. A liquid level sensor 5 is also arranged in the water tank 3 and used for sensing the liquid level height of the water tank 3; through the liquid level height of sensing water tank 3, learn the volume of 3 internal waters of water tank, further learn the charge-discharge condition of liquid electric fuel.
Optionally, the liquid level sensor 5 is one or more of a float type, float type or static pressure type liquid level sensor 5.
The liquid electric fuel charging and discharging system of the embodiment can be used in automobiles, ships, commercial buildings, civil buildings or transformer substations.
Example 2
Fig. 2 is a schematic structural view of the liquid electric fuel charge and discharge system according to embodiment 2 of the present application during charging.
As shown in fig. 2, in the present embodiment, the working flow of the charging and discharging system for liquid electric fuel in embodiment 1 is described by taking vanadium electric fuel as an example.
The fully charged vanadium electric fuel comprises divalent vanadium ions (V)2+) Acid electrolyte (main component is V)2+,S04 2-,C1-And H+). The vanadium electric fuel to be charged comprises trivalent vanadium ions (V)3+) The electrolyte has the main component of V3+,S04 2-And C1-。
During charging, the electric pile 1 is charged through the charging interface 11, at the moment, the liquid electric fuel storage tank 2 conveys the liquid electric fuel to be charged to the electric pile 1 and comprises trivalent vanadium ions, and receives the charged liquid electric fuel conveyed by the electric pile 1 and comprises divalent vanadium ions; the water tank 3 delivers water to the electric pile 1, and the gas drainage device 4 discharges oxygen generated by the electric pile 1 until the liquid electric fuel is fully charged.
The specific reaction process is as follows:
negative electrode: v3++e-→V2+
And (3) positive electrode: 2H2O-4e-→O2+4H+
Example 3
Fig. 3 is a schematic view of the structure of the liquid electric fuel charge/discharge system according to embodiment 3 of the present application at the time of discharge.
As shown in fig. 3, in the present embodiment, the operation flow of the liquid electric fuel charge and discharge system of embodiment 1 during discharging is described by taking a vanadium electric fuel as an example.
The fully charged vanadium electric fuel comprises divalent vanadium ions (V)2+) Acid electrolyte (main component is V)2+,S04 2-,C1-And H+). The vanadium electric fuel to be charged comprises trivalent vanadium ions (V)3+) The electrolyte has the main component of V3+,S04 2-And C1-。
During discharging, the galvanic pile 1 discharges through the discharging interface 12, at the moment, the liquid electric fuel storage tank 2 transmits the charged liquid electric fuel to the galvanic pile 1 and receives the liquid electric fuel to be charged, which is transmitted by the galvanic pile 1 and comprises trivalent vanadium ions; the water tank 3 receives water generated by the galvanic pile 1, and the gas drainage device 4 conveys oxygen to the galvanic pile 1 until the liquid electric fuel finishes discharging.
The specific reaction process is as follows:
negative electrode: v2+-e-→V3+
And (3) positive electrode: o is2+4H++4e-→2H2O
Example 4
The embodiment provides a liquid electric fuel vehicle, which comprises the liquid electric fuel charging and discharging system of embodiment 1, and the liquid electric fuel charging and discharging system of embodiment 1 is utilized to provide power for the liquid electric fuel vehicle, and the description of the same parts in this embodiment is omitted. Wherein the charging interface 11 of the galvanic pile 1 is electrically connected with the charging interface of the automobile or the charging interface 11 of the galvanic pile 1 is the same as the charging interface of the automobile. The discharging interface 12 of the electric pile 1 is electrically connected with an automobile motor to supply power for the automobile motor.
The liquid electricity fuel car of this embodiment, charge-discharge efficiency is high, and green to usable current charging station, fill facilities such as electric pile, realize the charging of liquid flow fuel, need not to found charging device in addition.
Example 5
Fig. 4 is a flowchart of a method for charging and discharging a liquid electric fuel vehicle according to embodiment 5 of the present application.
As shown in fig. 4, the steps of the method for charging and discharging the liquid electric fuel vehicle of the embodiment include:
s1: after the automobile reaches the mileage limit value, the liquid electric fuel is discharged to a non-electric or weak-electric state, the automobile runs to a charging station, the charging station charges the electric pile 1 on the automobile through the charging interface 11, at the moment, the water tank 3 on the automobile conveys water to the electric pile 1, the liquid electric fuel storage tank 2 conveys the liquid electric fuel to be charged to the electric pile 1 and receives the charged liquid electric fuel conveyed by the electric pile 1, the gas drainage device 4 discharges oxygen generated by the electric pile 1 to fully charge the liquid electric fuel in the automobile;
s2: the electric pile 1 supplies power to the automobile motor through the discharge interface 12 to meet the electric energy required by the running of the automobile, at the moment, the oxygen in the air supplied by the anode of the electric pile 1 through the gas drainage device 4 generates electrochemical reaction, and the generated water is discharged to the water tank 3; the liquid electric fuel at the cathode of the galvanic pile 1 is discharged to meet the power supply requirement of the automobile motor, and the step returns to the step S1 after the liquid electric fuel is discharged to a non-electric or weak-electric state.
The charging and discharging method of the liquid electric fuel automobile is high in charging and discharging efficiency, environment-friendly, capable of utilizing facilities such as an existing charging station and a charging pile to realize charging of the liquid electric fuel, and free of the need of an additional charging device.
Example 6
Fig. 5 is a flowchart of an operation method of charging and discharging energy storage by using a liquid electric fuel according to embodiment 6 of the present application.
As shown in fig. 5, the operation method for storing energy by charging and discharging liquid electric fuel of the present embodiment includes:
s10: determining whether the liquid electric fuel charging and discharging station is in a one-way charging operation mode or a two-way charging and discharging operation mode according to the position of the total capacity of the storage tank of the liquid electric fuel charging system in the power grid and a virtual power plant or power grid auxiliary service developed by matching with the power grid;
s20: determining the charging and discharging capacity of the liquid electric fuel of the charging station according to the total capacity of a storage tank of the liquid electric fuel charging system, the depth of participation in a virtual power plant of a power grid or auxiliary service of the power grid and the electric load quantity of charging or discharging;
s30: the liquid electric fuel charging and discharging system is used for participating in any one or combination of peak shaving, frequency modulation, black start or interruptible power storage load response of the power grid.
The operation method of charging and discharging energy storage by using the liquid electric fuel can utilize the peak-load frequency modulation at the power generation side or the surplus electric power at the valley to intensively charge the electric fuel, and then the electric fuel is delivered to each gas station, so that the centralized and efficient charging of the liquid electric fuel is realized.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (11)
1. A liquid electric fuel charge and discharge system, comprising:
the electric pile (1) is provided with a charging interface (11) and used for charging the electric pile (1) through the charging interface (11), and the electric pile (1) is also provided with a discharging interface (12) and used for discharging an external circuit or equipment through the discharging interface (12); the charging interface (11) and the discharging interface (12) are integrated into one interface and integrally arranged or are separately and independently arranged;
a liquid electric fuel storage tank (2) for storing liquid electric fuel, wherein the liquid electric fuel storage tank (2) is communicated with the electric pile (1) and is used for delivering the liquid electric fuel to the electric pile (1) or receiving the liquid electric fuel delivered by the electric pile (1);
the liquid electric fuel formula comprises any one or combination of nano fluid electric fuel containing lithium titanate, lithium sulfide, high molecular polymer or lithium manganese nickel oxide, or inorganic electric fuel containing iron, vanadium or manganese, or organic electric fuel containing quinones, nitroxyl radicals or alloxazines.
2. The liquid electric fuel charge and discharge system according to claim 1, characterized by further comprising:
the water tank (3) is communicated with the galvanic pile (1) and is used for conveying water to the galvanic pile (1) or receiving and storing water generated by the galvanic pile (1);
and the gas drainage device (4) is communicated with the galvanic pile (1) and is used for conveying oxygen to the galvanic pile (1) or discharging oxygen generated by the galvanic pile (1).
3. The liquid electric fuel charge and discharge system according to claim 1, characterized in that:
the liquid electric fuel storage tank (2) is connected with the electric pile (1) through a supply return pipeline and a valve, and the circulation of the liquid electric fuel is completed by a pump or a power diaphragm piston arranged in the liquid electric fuel storage tank (2) so as to complete the circulation flow of the liquid electric fuel between the liquid electric fuel storage tank (2) and the electric pile (1).
4. The liquid electric fuel charge and discharge system according to claim 1 or 3, characterized in that:
a clapboard is arranged in the liquid electric fuel storage tank (2) to separate the charged liquid electric fuel from the liquid electric fuel to be charged; the partition is arranged in a fixed mode or a movable mode, and the movable mode depends on pressure difference generated by a pump or a power device of the partition to move, so that the volumes of the two sides of the partition are changed.
5. The liquid electric fuel charging and discharging system of claim 4, wherein the movable partition further comprises a sensing device;
the sensing means is connected to the liquid electronic fuel tank (2) for sensing the position of the partition within the liquid electronic fuel tank (2).
6. The liquid electric fuel charge and discharge system according to claim 4, further comprising a liquid level sensor (5);
the liquid level sensor (5) is arranged in the water tank (3) and/or the liquid electric fuel storage tank (2) and is used for sensing the liquid level height of the water tank (3) and/or the liquid electric fuel storage tank (2);
the liquid electric fuel storage tank (2) with the partition plate is provided with liquid level sensors (5) which are respectively arranged at two sides of the partition plate;
the level sensor (5) is preferably one or more of a float-type, float-type or static-pressure level sensor (5).
7. The liquid electric fuel charge and discharge system according to claim 1, wherein the charge and discharge system is applied to an automobile, a ship, a commercial building, a civil building, or a substation.
8. A liquid electric fuel vehicle comprising and utilizing the liquid electric fuel charge and discharge system of claims 1-7 to power the liquid electric fuel vehicle.
9. A method of charging and discharging a liquid electric fuel, using the liquid electric fuel charging and discharging system according to any one of claims 1 to 8, comprising:
the method comprises the steps that a galvanic pile (1) is charged through a charging interface (11), and at the moment, a liquid electric fuel storage tank (2) conveys liquid electric fuel to be charged to the galvanic pile (1) and receives the charged liquid electric fuel conveyed by the galvanic pile (1);
the electric pile (1) discharges an external circuit or equipment through a discharging interface (12), and at the moment, the liquid electric fuel storage tank (2) conveys the charged liquid electric fuel to the electric pile (1) and receives the liquid electric fuel to be charged conveyed by the electric pile (1).
10. A liquid electric fuel vehicle charge and discharge method, characterized in that the liquid electric fuel charge and discharge system according to any one of claims 1 to 8 is used, comprising:
s1: after the automobile reaches the mileage limit value, the liquid electric fuel is discharged to a non-electric or weak-electric state, the automobile runs to a charging station, the charging station charges a galvanic pile (1) on the automobile through a charging interface (11), at the moment, a water tank (3) on the automobile conveys water to the galvanic pile (1), a liquid electric fuel storage tank (2) conveys the liquid electric fuel to be charged to the galvanic pile (1) and receives the charged liquid electric fuel conveyed by the galvanic pile (1), and an air drainage device (4) discharges oxygen generated by the galvanic pile (1) to fully charge the liquid electric fuel in the automobile;
s2: the electric pile (1) supplies power to an automobile motor through a discharge interface (12) to meet the electric energy required by automobile running, at the moment, oxygen in air supplied by the anode of the electric pile (1) through a gas drainage device (4) is subjected to electrochemical reaction, and generated water is discharged to a water tank (3); and discharging the liquid electric fuel at the cathode of the galvanic pile (1) to meet the power supply requirement of the automobile motor, and returning to the step S1 after the liquid electric fuel is discharged to a non-electric or weak-electric state.
11. A charge-discharge energy storage operation method using a liquid electric fuel, characterized in that the liquid electric fuel charge-discharge system according to any one of claims 1 to 7 is used, comprising:
determining whether the liquid electric fuel charging and discharging station is in a one-way charging operation mode or a two-way charging and discharging operation mode according to the position of the total capacity of the liquid electric fuel storage tank of the liquid electric fuel charging system in the power grid and virtual power plant or power grid auxiliary service developed by matching with the power grid;
determining the charging and discharging capacity of the liquid electric fuel of the charging station according to the total capacity of the storage tank of the liquid electric fuel charging system, the depth of participation in a virtual power plant of a power grid or auxiliary service of the power grid and the electric load quantity of charging or discharging;
and the liquid electric fuel charging and discharging system is used for participating in any one or combination of peak regulation, frequency modulation, black start or interruptible power storage load response of a power grid.
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